@JeremyECrawford Would a pearl of power still be usable by a warlock of level 7+?
— Jonathan Longstaff (@pukunui81) April 6, 2015
I'd allow a pearl of power to take an expended spell slot of 4th level or higher and turn it into a 3rd-level slot. https://t.co/8yr9GdBF2l
— Jeremy Crawford (@JeremyECrawford) May 7, 2015